Sounds like a certainty stated like that. So not like toilet paper during covid?

what if the market was hard to enter?

What if the inputs aren't available?

What if the costs of the inputs rises?

What if the capital for expansion isn't available?

What if the manufacturers don't expect demand to persist?

What if there's a shortage of skilled labour?

What if it takes years to expand supply?

What if there wasn't effective competition?

I'm not sure it's as certain as you seem to claim.